Sources

found: Kwanzaa music [SR] p1994:program notes (Mahlathini and the Mahotella Queens (trio of backup singers); together since the mid-1960s; performs Mbaqanga music; South African)

found: Wikipedia, Sep. 2, 2013(Mahotella Queens; formed in 1964; originally five members, line-up fluctuated after 1971, then regrouped with the original five in 1983; backed by the Makhona Tsohle Band, fronted by Simon "Mahlathini" Nkabinde; three of the original singers continue to perform today)